Shared source is not identical liquid or a controlled packaging experiment; strength and maturation remain confounders.
The profile contains the typographical form “MPG” in one sentence but lists MGP Ingredients as producer on the same page. Its comparative tasting judgment is subjective; the provenance relationship is the relevant evidence.
The Riverboat profile attributes it and Redemption to the same source but reports different bartender responses. The listed bottling strengths also differ: Riverboat 40% and Redemption 46%.
“Riverboat Rye” — Summary
“Riverboat Rye” — Summary
Fresh full-source review2026-09-29: PDF sheets268–269 (internal coordinates; use existing named profile as reader locator). Verified means faithful attribution to the supplied2014 book, not independent truth or current product verification. Shared source is not identical liquid or a controlled packaging experiment; strength and maturation remain confounders.
Verified paraphrase from The North American Whiskey Guide from Behind the Bar, “Riverboat Rye” — Summary.
Evidence
Reader locator: “Riverboat Rye” — Summary
The exact paraphrase is stored in Excerpt Text. Riverboat and Redemption are described as sharing an MGP producer and high-rye mash bill, while the authors evaluate them differently.
Context
The page prints “MPG” once but lists MGP Ingredients as producer on the same page. The tasting comparison is subjective; the provenance relationship and nonidentity boundary are the relevant evidence.
Annotation
Shared producer and mash bill do not entail identical finished whiskey or consumer experience.